JP2012180984A - Shutter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shutter device that reliably ensures opening and closing of a shutter, regardless of a structure of a building, and thereby secures performance thereof.SOLUTION: The shutter device includes a frame 2 of a ventilation fan 1, a motor 3 axially installed into the frame 2, a fan 4 rotated by the motor 3, and a shutter plate 9 arranged at a ventilation duct 8a. A holder 10 is formed on a shutter surface 11 at the right and left end of the shutter plate 9, and a holding shaft 12 is formed to be pivotally supported by an opening of the holder 10. The holding shaft 12 is arranged at a position not jumping out of the ventilation duct 8a when the shutter plate 9 is fully opened, so that the shutter plate 9 is operated within the ventilation duct part 8a and is prevented from jumping out to the outside. Accordingly, the operation is never inhibited by a building structure of the outdoor side, and thereby the performance is exhibited.

Description

  The present invention intrudes from an inflow side connection port connected to a side to which the incoming wind flows in, an outflow side connection port connected to a side from which the sent wind flows out, and the outflow side connection port The present invention relates to a shutter device provided with a shutter for preventing outside wind.

  Conventionally, this type of shutter device is a ventilator that discharges a sent wind through a duct that communicates outdoors, and the shutter device is provided in the ventilator (for example, Patent Document 1).

  The shutter device will be described below with reference to FIGS.

  As shown in the figure, an inflow side connection port 101 into which a sent wind flows in, an outflow side connection port 102 connected to a side from which the sent wind flows out, and a shutter 104 for preventing external wind are provided. It comprises a duct sleeve 105 having a shutter support shaft 103 to which 104 is attached. The shutter support shaft 103 is provided in the outflow side connection port 102 so as to be opposed to the shutter 102, and the shutter 104 is rotatably mounted. Therefore, the shutter 104 is pushed open by the wind pressure of the sent wind to ventilate. The exhaust from the outflow side connection port 102 becomes possible. And when there is no air blowing, it closes with the dead weight of the shutter 104, and the backflow of external wind can be prevented.

JP 2003-065581 A

  In such a conventional shutter device, the distance from the outflow side connection portion to the shutter support shaft is shorter than the distance from the shutter support shaft to the lower end of the shutter, and a part thereof protrudes from the duct sleeve when the shutter is opened. There is a case where the shutter device is used for ventilation using a vertical shaft in a building. The vertical shaft may be used as a pipe space such as a water pipe other than the purpose as a ventilation duct, and it may not be known how much installation space for the ventilation facility can be secured. When there is a building structure such as a water pipe in such an installation situation, there is a problem that the shutter contacts the structure and does not open as designed.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object of the present invention is to provide a shutter device that can reliably open and close the shutter regardless of the structure of the building and ensure performance.

  In order to achieve the above object, the shutter device of the present invention has a duct sleeve provided in a vertical wall opening that communicates indoors and outdoors, a ventilation fan that exhausts the interior of the duct sleeve from the interior to the exterior, and a ventilation duct portion of the duct sleeve. A shutter plate that opens and closes around a holding shaft extending from the inner wall is provided, and the holding shaft is provided at a position where the front end of the shutter plate does not protrude from the ventilation duct when the shutter plate is fully opened. To do. In other words, since the shutter plate operates in the ventilation duct part and does not jump out in any operating situation, the shutter plate contacts the building structure outside the room, and the performance can be exhibited without hindering the operation. An effective shutter device can be obtained.

  A duct sleeve provided in a vertical wall opening communicating with the interior of the room, a ventilation fan exhausted from the room to the outside of the room, and a shutter plate that opens and closes around a holding shaft extending from the inner wall of the air duct portion of the duct sleeve. By providing the holding shaft at a position where the front end of the shutter plate does not jump out of the ventilation duct when the shutter plate is fully opened, the shutter plate does not jump out of the ventilation duct, and the outdoor building structure The shutter plate comes into contact, and the performance can be exhibited without hindering the operation.

Sectional drawing which shows the structure and shape of the shutter apparatus of Embodiment 1 of this invention Rear view showing the configuration and shape of the shutter device Partial sectional view showing the shape of the shutter device Sectional drawing which shows the structure and shape of Embodiment 2 of this invention A perspective view showing the configuration and shape of the shutter device The perspective view which shows the structure and shape of Embodiment 3 of this invention. Configuration diagram showing configuration and shape of a conventional shutter device Front view showing the configuration and shape of the shutter device

  The shutter device of the present invention is centered on a duct sleeve provided in a vertical wall opening that communicates between the interior and the exterior, a ventilation fan that exhausts the interior of the duct sleeve from the interior to the exterior, and a holding shaft that extends from the inner wall of the air duct portion of the duct sleeve. A shutter plate that opens and closes, and the holding shaft is provided at a position where the tip of the shutter plate does not protrude from the ventilation duct when the shutter plate is fully opened.

  By this means, the shutter plate operates in the ventilation duct part and does not jump out in any operating situation, so that the shutter plate comes into contact with the outdoor building structure, and the performance is not hindered. An effective shutter device can be obtained.

  Further, the other means is a structure in which the distance from the lower end of the shutter plate to the holding shaft is longer than the distance between the upper end of the shutter plate and the holding shaft, and the inside of the ventilation duct portion where the upper end of the shutter plate contacts A convex portion is provided on the upper rib, and when the shutter plate is closed, the convex portion contacts the convex portion.

  By this means, when the shutter plate is closed, the contact with the ventilation duct portion is only the contact between the upper end portion of the shutter plate and the convex portion. Further, since the upper end of the shutter plate is shorter than the distance between the lower end of the shutter plate and the holding shaft, the impact when the shutter plate is closed is reduced, and the shutter plate closing sound is reduced. Further, since the shutter plate is in contact with only the convex portion, it is possible to obtain a shutter device that can reduce the occurrence of opening / closing failure due to the shutter plate being fixed to the ventilation duct portion even when the shutter plate is not operated for a long period of time.

  Another means is a structure in which a bent portion bent toward the indoor side is provided at the lower end portion of the shutter plate.

  By this means, the horizontal distance between the lower end portion of the shutter plate and the support shaft can be shortened, so that the length of the ventilation duct portion is shortened and a shutter device with a small product size is obtained.

  Another means is a structure in which a notch portion is provided on the side surface of the ventilation duct portion outside the outdoor side of the lower rib inside the ventilation duct portion.

  By this means, even when the opening angle of the shutter plate is small, exhaust is performed from the cutout portion on the side surface of the ventilation duct portion, so that a shutter device that can ensure performance without receiving resistance can be obtained.

  Another means is a structure in which the ventilation duct portion is longer than the wall thickness, and a downward slope is provided in the ventilation duct portion toward the outdoor side.

  By this means, air containing condensed water or humidity generated in a ventilation fan or ventilation duct can be discharged outside without contacting the wall surface, so that the condensed water or moisture can adhere to the wall surface and corrode. There is no shutter device.

  Another means is a structure in which the lower end portion of the lower rib inside the ventilation duct portion with which the shutter plate contacts is cut and a drain hole is provided at the rear end of the ventilation duct portion.

  By this means, the condensed water adhering to the inside of the ventilation duct is collected at the lower end of the ventilation duct, flows to the outside of the room due to the gradient, passes through the cut lower rib, and is discharged to the outside through the drain hole. A shutter device that can discharge water to the outside of the room is obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIG. 1, there is a case where the shutter device is used for ventilation using a vertical shaft 21 in a building for the purpose of preventing the backflow of contaminated air. The vertical shaft 21 may be used as a pipe space such as a water pipe 22 in addition to the purpose as a ventilation duct, and it may not be known how much space for installing a ventilation facility can be secured.

  The shutter device will be described with reference to FIGS. A ventilation fan 1 as a ventilation device is provided on a frame 2 constituting an outer shell and a ventilation path of a main body, a motor 3 attached to the frame 2, a fan 4 provided on the motor 3 and a ventilation inlet side of the frame 2. The louver 5 is configured. A suction port 6 is formed in the louver 5. The ventilation fan 1 is sucked from the suction port 6 and is inserted into the ventilation duct portion 8a of the duct sleeve 8 provided in the vertical wall opening 7 communicating with the inside and outside of the room. In the downstream portion of the ventilation duct portion 8a, A shutter plate 9 is disposed.

  The left and right ends of the shutter plate 9 are formed with a holding portion 10 having a hole in the center so as to rise from the shutter surface 11, and the left and right ventilation duct portions 8a are pivotally supported by the opening of the holding portion 10. A holding shaft 12 protruding from the inner wall is also formed. The distance from the holding shaft 12 to the rear end of the ventilation duct portion 8a is longer than the distance from the holding shaft 12 to the lower end of the shutter plate 9, and when the shutter plate 9 is fully opened, the tip of the shutter plate 9 is located at the front end of the ventilation duct portion. It is provided at a position where it does not protrude from 8a. When the holding portion 10 of the shutter plate 9 is fitted to the holding shaft 12, the left and right portions of the shutter surface 11 become shaft support portions, and the shutter plate 9 rotates with a line connecting the shaft support portions as a rotation shaft 13.

  The rotation shaft 13 is provided above the shutter center line 14. Further, an inner rib of the ventilation duct portion 8a is provided with an upper rib 15 on the downstream side of ventilation and a lower rib 16 on the upstream side of ventilation. Both the upper rib 15 and the lower rib 16 are formed in an arc shape on the cylindrical inner wall of the ventilation duct portion 8a so that the outer peripheral portion of the shutter surface 11 is in an arc shape. A convex portion 17 is provided on the surface of the upper rib 15 on which the shutter plate 9 abuts, and the upper rib 15 is formed on the upstream side of the ventilation shaft 13 relative to the rotating shaft 13. The lower rib 16 is formed on the ventilation downstream side of the rotation shaft 13. That is, the shutter plate 9 is pivotally supported, and the rotation shaft 13 is above the shutter center line 14, so the area of the shutter upper surface 11 a above the rotation shaft 13 is lower than the rotation shaft 13. It is smaller than the area of the shutter lower surface 11b on the side. That is, the shutter lower surface 11b is heavier than the shutter upper surface 11a, and due to the positional relationship between the rotating shaft 13, the upper rib 15 and the lower rib 16, the shutter surface 11 is moved by the dead weight of the shutter plate 9 in the absence of ventilation. In addition, the shutter plate 9 is held in contact with the lower rib 16 and the shutter plate 9 is closed. In addition, by tilting the rotation shaft 13 from the horizontal direction, it is possible to adjust the contact force when the shutter surface 11 is in contact with the upper rib 15 and the lower rib 16 due to the weight of the shutter plate 9, and the blowing pressure In response, the turning power when the shutter plate 9 is opened can be increased.

  In the above configuration, when the ventilation fan 1 is operated, the fan 4 rotates and air is sucked from the suction port 6 and is rectified by the frame 2 and blown into the ventilation duct portion 8a. This ventilation hits the shutter plate 9 provided on the downstream side in the ventilation duct portion 8a, and the shutter plate 9 closed by its own weight rotates about the rotation shaft 13 to open the shutter plate 9 in the horizontal direction. At this time, since the shutter operates in the ventilation duct portion 8a and does not jump out in any operating condition, the shutter plate 9 comes into contact with a building structure such as the water pipe 22 in the vertical shaft 21, and the operation is performed. The performance can be exhibited under any construction condition without being hindered.

  Further, when the shutter plate 9 is closed, the contact with the ventilation duct portion 8a is only the contact between the upper end of the shutter plate 9 and the convex portion 17, and the distance between the lower end of the shutter plate 9 and the holding shaft 12 is greater than that of the shutter plate 9. Since the upper end is shorter, the impact when the shutter plate 9 is closed is small, so that the closing sound of the shutter plate 9 is reduced.

  Further, since the shutter plate 9 is in contact with only the convex portion 17, it is possible to reduce the possibility that the shutter plate 9 adheres to the upper rib 15 and the lower rib 16 of the ventilation duct portion and becomes poor in opening and closing even when the shutter plate 9 is not operated for a long time.

(Embodiment 2)
As shown in FIGS. 4 and 5, the shutter plate 9 is provided with a bent portion 18 that is bent toward the indoor side at the lower end portion. Moreover, it is set as the structure which provided the notch part 19 in the ventilation duct part 8a side surface of the outdoor side from the lower rib 16 inside the ventilation duct part 8a.

  In the above configuration, when the ventilation fan 1 is operated, the shutter plate 9 is rotated about the rotation shaft 13 as in the first embodiment, and the shutter plate 9 is opened in the horizontal direction. Since the front end of the shutter plate 9 is bent toward the indoor side, the horizontal distance between the lower end portion of the shutter plate 9 and the holding shaft 12 can be shortened, and the length of the ventilation duct portion 8a can be shortened. The cost can be reduced and construction can be performed even when the space of the vertical shaft 21 is small.

  The ventilation generated by the rotation of the fan 4 hits the shutter plate 9 and changes the flow downward. By providing a notch portion 19 on the side of the ventilation duct portion 8a on the outdoor side from the lower rib 16 inside the ventilation duct portion 8a, the ventilation with the flow changed downward is smoothly exhausted, so that the shutter plate 9 is opened. Even if it is small, air volume performance can be secured. That is, since the length of the ventilation duct portion 8a can be shortened, further product downsizing, cost reduction, and workability improvement can be achieved.

(Embodiment 3)
As shown in FIGS. 4 and 6, the ventilation duct portion 8a is longer than the wall thickness, and the ventilation duct portion 8a is provided with a downward gradient toward the outdoor side, and the inside of the ventilation duct portion 8a with which the shutter plate 9 contacts. The lower end portion of the lower rib 16 is cut, and a drain hole 20 is provided at the rear end of the ventilation duct portion 8a.

  In the said structure, the air containing the dew condensation water or humidity which generate | occur | produced with the ventilation fan 1 or the ventilation duct part 8a can be discharged | emitted outdoors, without making it contact a wall surface. Further, the condensed water adhering to the inside of the ventilation duct portion 8a collects at the lower end of the duct, flows to the outdoor side due to the gradient, passes through the cut lower rib 16, and is discharged from the drain hole 20 to the outside. Condensed water can be effectively discharged to the outside without being attached and corroded.

  The present invention can be applied to a device having a ventilation or air-conditioning function that communicates indoors and outdoors and an apparatus that requires a shutter for preventing external winds that are used for ventilation, ventilation, and air conditioning.

DESCRIPTION OF SYMBOLS 1 Exhaust fan 2 Frame 3 Motor 4 Fan 5 Louver 6 Suction port 7 Vertical wall opening 8 Duct sleeve 8a Ventilation duct part 9 Shutter board 10 Holding part 11 Shutter surface 11a Shutter upper surface 11b Shutter lower surface 12 Holding shaft 13 Rotating shaft 14 Shutter center line 15 Upper rib 16 Lower rib 17 Convex part 18 Bending part 19 Notch part 20 Drain hole 21 Vertical shaft 22 Water pipe

Claims (6)

A duct sleeve provided in a vertical wall opening communicating with the interior of the room, a ventilation fan exhausted from the room to the outside of the room, and a shutter plate that opens and closes around a holding shaft extending from the inner wall of the air duct portion of the duct sleeve. The shutter device is characterized in that the holding shaft is provided at a position where the tip of the shutter plate does not protrude from the ventilation duct when the shutter plate is fully opened. The distance from the lower end of the shutter plate to the holding shaft is longer than the distance between the upper end of the shutter plate and the holding shaft, and a convex portion is formed on the upper rib inside the ventilation duct portion where the upper end of the shutter plate contacts. The shutter device according to claim 1, wherein the shutter device is configured to be in contact with the convex portion when the shutter plate is closed. The shutter device according to claim 1, wherein a bent portion bent toward the indoor side is provided at a lower end portion of the shutter plate. The shutter device according to claim 3, wherein a notch portion is provided on a side surface of the ventilation duct portion on the outdoor side of the lower rib inside the ventilation duct portion. The shutter device according to any one of claims 1 to 4, wherein the ventilation duct portion is longer than a wall thickness, and a downward slope is provided in the ventilation duct portion toward the outdoor side. The shutter device according to claim 5, wherein a lower end portion of a lower rib inside the ventilation duct portion in contact with the shutter is cut, and a drain hole is provided at a rear end of the ventilation duct portion.

Images